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Rule Fog Hunter

Fog Hunter Forecast for Tarn Hows, Lake District

Hawkshead, England, United Kingdom

Tarn Hows offers intimate water, mature trees and rounded fells, with paths, reeds and reflections creating compact compositions in mist or autumn color.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread1.8°C
Visibility24135 (Clear)
Relative Humidity89%
Wind Speed4.2m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London
fog weather icon
Next opportunity
Fog Potential at Dusk
Tarn Hows
Sun, Sep 13 · 20:00–21:00 · 1h window
Low confidence
34%
🌫️Fog Probability79.7%
Dewpoint Spread: 0.3°C
Visibility: 11583 (Clear)
Relative Humidity: 98%
Wind Speed: 2.9m/s (calm conditions)
fog weather icon
Dense Fog
Tarn Hows
Sun, Sep 13 · 21:00–02:00
🌫️Fog Probability:80.9-100%
Medium

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Lake District. The requirements and hourly values below show how those signals apply at Tarn Hows.

Explore Fog Hunter conditions across Lake District →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Tarn Hows during the last 365 days.

Last 30 days
5
recorded matching windows · 85% average confidence
Last 90 days
31
recorded matching windows · 76% average confidence
Last 365 days
51
recorded matching windows · 77% average confidence
Most frequent recorded start hour

04:00 local time, shared by 11 of 51 matches recorded in the last 365 days.

Most represented month

June, with 21 of 51 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Sat, Sep 5
22:000%
23:000%
Sun, Sep 6
24:000%
01:0055%
02:0055%
03:0055%
04:0055%
05:0055%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:0050%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Mon, Sep 7
24:000%
01:0018%
02:0036%
03:0048%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Tue, Sep 8
24:000%
01:000%
02:0030%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Sep 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:0055%
07:0055%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Europe/London
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Sun, Sep 6 Sunrise 06:28 Sunset 19:50
22:00 ☾
0% 12°C 0mm 89% 0cm -18° 14°C 0mm 0.17kPa 24135m 11m/s 4.2m/s
23:00 ☾
0% 13°C 0.13mm 93% 0cm -24° 14°C 0.13mm 0.12kPa 24135m 12m/s 3.6m/s
Mon, Sep 7 Sunrise 06:28 Sunset 19:50
24:00 ☾
0% 13°C 0mm 94% 0cm -28° 14°C 0.25mm 0.1kPa 24134m 12m/s 4m/s
01:00 ☾
0% 14°C 0.01mm 96% 0cm -29° 14°C 0.31mm 0.07kPa 24134m 12m/s 4.2m/s
02:00 ☾
0% 15°C 0.14mm 97% 0cm -29° 15°C 0.13mm 0.05kPa 10451m 11m/s 4.7m/s
03:00 ☾
0% 14°C 0.75mm 97% 0cm -25° 15°C 0.69mm 0.05kPa 5279m 6.3m/s 3m/s
04:00 ☾
0% 14°C 0.34mm 98% 0cm -20° 14°C 1.1mm 0.04kPa 10143m 5.3m/s 2.2m/s
05:00 ☾
0% 13°C 0mm 96% 0cm -13° 14°C 1.5mm 0.06kPa 24135m 2.9m/s 2.1m/s
06:00 ☾
0% 12°C 0mm 94% 0cm -5° 13°C 1.6mm 0.09kPa 24135m 2.8m/s 2.3m/s
07:00
0% 11°C 0mm 92% 0cm 3.7° 12°C 1.6mm 0.11kPa 24134m 2.9m/s 2.1m/s
08:00
0% 11°C 0mm 92% 0cm 12° 12°C 0mm 0.12kPa 24134m 8m/s 2.1m/s
09:00
0% 10°C 0.01mm 87% 0cm 21° 13°C 0mm 0.19kPa 24134m 7.3m/s 2.5m/s
10:00
0% 10°C 0mm 82% 0cm 28° 13°C 0.06mm 0.26kPa 24134m 7.5m/s 3.4m/s
11:00
0% 9.8°C 0mm 81% 0cm 35° 13°C 0.06mm 0.28kPa 24134m 8.6m/s 3.8m/s
12:00
0% 9.2°C 0mm 75% 0cm 40° 14°C 0.06mm 0.38kPa 24134m 8.8m/s 3.9m/s
13:00
0% 9.8°C 0mm 75% 0cm 42° 14°C 0.06mm 0.4kPa 24135m 9.4m/s 5.4m/s
14:00
1% 11°C 0mm 81% 0cm 41° 14°C 0.06mm 0.31kPa 24135m 10m/s 5.9m/s
15:00
1% 11°C 0mm 85% 0cm 37° 13°C 0.25mm 0.22kPa 24134m 11m/s 5.9m/s
16:00
2% 11°C 0mm 84% 0cm 31° 13°C 0.31mm 0.25kPa 24134m 11m/s 6.5m/s
17:00
1% 10°C 0mm 80% 0cm 23° 14°C 0.38mm 0.32kPa 24134m 12m/s 6m/s
18:00
1% 11°C 0mm 82% 0cm 15° 14°C 0.44mm 0.27kPa 24135m 12m/s 5.6m/s
19:00
0% 11°C 0.59mm 87% 0cm 6.3° 13°C 0.75mm 0.18kPa 14300m 12m/s 5.6m/s
20:00 ☾
0% 12°C 4.3mm 97% 0cm -2.3° 12°C 1.9mm 0.04kPa 2383m 12m/s 5m/s
21:00 ☾
0% 12°C 4.7mm 98% 0cm -11° 12°C 8mm 0.02kPa 476m 9.9m/s 3.8m/s
22:00 ☾
0% 11°C 0.11mm 91% 0cm -18° 12°C 9mm 0.12kPa 24135m 11m/s 2.9m/s
23:00 ☾
0% 10°C 0.32mm 96% 0cm -24° 11°C 9.3mm 0.05kPa 19249m 5.2m/s 2.8m/s
Tue, Sep 8 Sunrise 06:30 Sunset 19:48
24:00 ☾
1% 11°C 0.19mm 98% 0cm -28° 11°C 10mm 0.03kPa 21881m 6.1m/s 2.3m/s
01:00 ☾
1% 10°C 0.94mm 96% 0cm -30° 11°C 11mm 0.05kPa 9996m 6m/s 2.3m/s
02:00 ☾
4% 10°C 0.58mm 96% 0cm -29° 11°C 0.88mm 0.05kPa 12479m 4.4m/s 1.9m/s
03:00 ☾
6% 10°C 0.06mm 95% 0cm -26° 11°C 1.3mm 0.06kPa 23217m 6.5m/s 2.5m/s
04:00 ☾
9% 9.1°C 0.02mm 92% 0cm -20° 10°C 1.4mm 0.1kPa 24134m 8.4m/s 2.4m/s
05:00 ☾
8% 8.4°C 0.02mm 92% 0cm -13° 9.6°C 1.5mm 0.09kPa 24135m 9.1m/s 3.6m/s
06:00 ☾
6% 7.7°C 0.02mm 93% 0cm -5.3° 8.8°C 1.6mm 0.08kPa 24134m 9.9m/s 3.8m/s
07:00
5% 7.8°C 0mm 91% 0cm 3.4° 9.1°C 1.7mm 0.1kPa 24134m 9.8m/s 4m/s
08:00
6% 7.9°C 0mm 91% 0cm 12° 9.3°C 0mm 0.11kPa 24134m 9.7m/s 4.5m/s
09:00
7% 8.4°C 0mm 90% 0cm 20° 10°C 0.19mm 0.13kPa 14791m 9.9m/s 5.6m/s
10:00
8% 8.5°C 0mm 88% 0cm 28° 10°C 0.31mm 0.15kPa 24135m 11m/s 7.9m/s
11:00
6% 8.3°C 0mm 84% 0cm 35° 11°C 0.44mm 0.21kPa 24134m 12m/s 8.9m/s
12:00
4% 8.9°C 0.43mm 90% 0cm 39° 10°C 0.75mm 0.12kPa 11803m 12m/s 8.6m/s
13:00
2% 8.7°C 0mm 95% 0cm 41° 9.5°C 1.1mm 0.06kPa 24135m 13m/s 7.8m/s
14:00
5% 9.1°C 0mm 95% 0cm 40° 9.9°C 0.19mm 0.06kPa 22913m 13m/s 8.8m/s
15:00
7% 9.2°C 0mm 91% 0cm 36° 11°C 0.38mm 0.11kPa 24135m 13m/s 8.8m/s
16:00
10% 8.9°C 0.01mm 82% 0cm 30° 12°C 0.5mm 0.24kPa 24134m 15m/s 9.5m/s
17:00
12% 8.3°C 0mm 82% 0cm 23° 11°C 0.69mm 0.25kPa 24135m 16m/s 9.8m/s
18:00
13% 8.5°C 0.05mm 88% 0cm 15° 10°C 0.88mm 0.16kPa 20109m 16m/s 10m/s
19:00
15% 8.5°C 0mm 92% 0cm 6° 9.7°C 1.1mm 0.1kPa 24134m 16m/s 10m/s
20:00 ☾
25% 8.6°C 0mm 93% 0cm -2.7° 9.7°C 0.25mm 0.08kPa 19072m 17m/s 11m/s
21:00 ☾
35% 8.7°C 0mm 94% 0cm -11° 9.6°C 0.5mm 0.07kPa 24134m 17m/s 11m/s
22:00 ☾
45% 7.7°C 0mm 88% 0cm -18° 9.5°C 0.56mm 0.14kPa 24134m 17m/s 11m/s
23:00 ☾
47% 7.5°C 0mm 88% 0cm -24° 9.4°C 0.56mm 0.15kPa 24134m 17m/s 11m/s
Wed, Sep 9 Sunrise 06:32 Sunset 19:45
24:00 ☾
50% 7.8°C 0mm 89% 0cm -28° 9.5°C 0.56mm 0.13kPa 24135m 17m/s 10m/s
01:00 ☾
52% 7.7°C 0mm 89% 0cm -30° 9.4°C 0.63mm 0.13kPa 24135m 16m/s 9.9m/s
02:00 ☾
60% 7.6°C 0mm 89% 0cm -29° 9.4°C 0mm 0.13kPa 24134m 15m/s 8.5m/s
03:00 ☾
69% 7°C 0mm 88% 0cm -26° 8.9°C 0mm 0.14kPa 24134m 14m/s 7.3m/s
04:00 ☾
77% 6.5°C 0mm 91% 0cm -21° 7.9°C 0mm 0.09kPa 24135m 6.1m/s 3.4m/s
05:00 ☾
81% 6°C 0mm 95% 0cm -14° 6.9°C 0mm 0.05kPa 24135m 2.1m/s 2.4m/s
06:00 ☾
84% 5.7°C 0mm 95% 0cm -5.6° 6.5°C 0mm 0.05kPa 24134m 1.7m/s 2.1m/s
07:00
88% 5.6°C 0mm 95% 0cm 3.2° 6.3°C 0mm 0.05kPa 24135m 1.7m/s 2.1m/s
08:00
89% 7°C 0.01mm 89% 0cm 12° 8.7°C 0mm 0.13kPa 24135m 3.1m/s 3.4m/s
09:00
90% 8.3°C 0.03mm 82% 0cm 20° 11°C 0mm 0.23kPa 24135m 4.5m/s 4.7m/s
10:00
91% 9.4°C 0.04mm 76% 0cm 28° 14°C 0mm 0.37kPa 24135m 5.8m/s 6m/s
11:00
89% 9.1°C 0.03mm 80% 0cm 34° 13°C 0.02mm 0.3kPa 24135m 4.4m/s 4.6m/s
12:00
88% 8.7°C 0.01mm 83% 0cm 39° 12°C 0.04mm 0.23kPa 24135m 3.1m/s 3.3m/s
13:00
86% 8.3°C 0mm 86% 0cm 41° 10°C 0.06mm 0.17kPa 24135m 1.7m/s 1.9m/s
14:00
78% 7.8°C 0mm 88% 0cm 40° 9.6°C 0.04mm 0.14kPa 24135m 1.7m/s 1.8m/s
15:00
71% 7.2°C 0mm 91% 0cm 36° 8.7°C 0.02mm 0.11kPa 24135m 1.7m/s 1.7m/s
16:00
63% 6.6°C 0mm 93% 0cm 30° 7.7°C 0mm 0.08kPa 24135m 1.6m/s 1.6m/s
17:00
63% 7°C 0mm 92% 0cm 23° 8.2°C 0mm 0.09kPa 24135m 2.1m/s 1.9m/s
18:00
63% 7.3°C 0mm 91% 0cm 14° 8.6°C 0mm 0.1kPa 24135m 2.5m/s 2.1m/s
19:00
63% 7.6°C 0mm 91% 0cm 5.6° 9.1°C 0mm 0.11kPa 24135m 2.9m/s 2.3m/s
20:00 ☾
55% 8.2°C 0mm 93% 0cm -3.1° 9.3°C 0.06mm 0.08kPa 18898m 4.7m/s 2.6m/s
21:00 ☾
47% 8.9°C 0mm 96% 0cm -11° 9.5°C 0.13mm 0.05kPa 13660m 6.5m/s 2.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →
Forecast generated

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